package com.hailin.lease.web.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.hailin.lease.common.constant.RedisConstant;
import com.hailin.lease.common.exception.LeaseException;
import com.hailin.lease.common.result.ResultCodeEnum;
import com.hailin.lease.common.utils.JwtUtil;
import com.hailin.lease.model.entity.SystemUser;
import com.hailin.lease.model.enums.BaseStatus;
import com.hailin.lease.web.admin.service.LoginService;
import com.hailin.lease.web.admin.service.SystemUserService;
import com.hailin.lease.web.admin.vo.login.CaptchaVo;
import com.hailin.lease.web.admin.vo.login.LoginVo;
import com.hailin.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate redisTemplate;

    @Autowired
    private SystemUserService systemUserService;
    /**
     * 获取图形验证码
     * @return
     */
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        String image = specCaptcha.toBase64();
        redisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

        return new CaptchaVo(image, key);
    }

    /**
     * 登录接口
     * @param loginVo
     * @return
     */
    public String login(LoginVo loginVo) {
        //1.验证码是否输入
        if (loginVo.getCaptchaCode() == null || loginVo.getCaptchaKey() == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }

        //2.校验验证码
        String captchaCode = redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (captchaCode == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        if (!captchaCode.equals(loginVo.getCaptchaCode().toLowerCase())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }

        //3.校验用户是否存在
        SystemUser user = systemUserService.getByUsername(loginVo.getUsername());
        if (user == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        //4.该用户是否被禁用
        if (user.getStatus() == BaseStatus.DISABLE) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        //5.校验密码
        if (!user.getPassword().equals(DigestUtils.md5DigestAsHex(loginVo.getPassword().getBytes()))) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        return JwtUtil.createToken(user.getId(), user.getUsername());
    }

    /**
     *
     * @param userId
     * @return
     */
    public SystemUserInfoVo getUserInfo(Long userId) {
        SystemUser user = systemUserService.getById(userId);
        SystemUserInfoVo userInfoVo = new SystemUserInfoVo();
        BeanUtils.copyProperties(user, userInfoVo);
        return userInfoVo;
    }
}
